Muffler.



G. GRAY.

MUFFLER. I APPLIUATION FILED DEC. 8, 1909.

Patented Feb. 14, 1911.

' Homwxa UNITED STATES PATENT OFFICE;

GEORGE GRAY, E MIANUS, CONNEOIIGUT, ASSIGNOR ,TO MIANUS MOTOR WORKS, OF

MIANUS, CONNECTICUT, A

CORPORATION OF C7O1\l'NEG'JLIGUTv MUFFLER.

T 0 all whom it may concern."v

Be'it known that l, (lnomui (law. oi" Mianus, county of Fail-field, Ella-to of Connecticut, have invented certain new and useful Improvements in Mufllers. of which the following is a full, clear, and exact specifb cation, such as Wlll enable others skilled in the art to which it apg iertains to make and of the muffler according the exhaust and. creating a hack pressure in the Working chan'ihcr'. In attaining this end I cause the exhaust to enter the a perforate pipe .or similar muffier through Water supply to the element located under a interior of the muliler the hot gases to encounter water spray in stantly upon passing into the {D'Hlllfll' chant her, thereby cooling and condensing the gases and bringing them close to the point of atmospheric pressure, Further by this arrangement in combination with the muffler chambor, which fi'u'nienes an expansion chamber, the gases thus cooled and reduced .in volume are given room to expand before finally passing from the muiller to the atmosphere, Opposite the inlet for 'the exhaust gases the muflier chamber is provided with the final outlet connection and also with an outlet for the water.

The invention involves other features of importance, all of which will fully appear hereinafter.

Reference is had to the acconuaanying, drawing, which repreeentsa sectional view to the preferred construction.

, In this drawing a indicates the body or muiiier chamber, which is preferably in the form of a cylindric drum of cast iron, provided with loossed inlet opening af'and a similar outlet opening a respectively in ll'R opposite ends '01: heads and alsoprovidod at; its top near the inlet end with the liossed Waterinlet a? outle tend With a hossed water outlet of.

flircaded into the inlelflu'ienirig'c is the perforate supply pipe or tbimble lathe in nor end of which is formedwith a per: forate Wall. This thimhlo projects con chamher which ca uses and at the bottom near the Specification of Letters Patent.

Patented Feb. 14, 1911.

s, 1909. Serial No. 531,929.

trally into the rha-n'lber of the muiiier and has a union with the exhaust pipe (2 from the engine. Gases passing out athigh pres-- enter the pipe or thimble b and emerge therefrom through the perforated sides and end.-

(Z indicates the Water supply pipe Which inay come from any suitable source preferably from the cylinder jacket and which is fastened in the inlet a of. the n'nitfler chamber directly over the perforate thimhle 72. in this manner the spray of Water is discharged rontinuallyon the thimhle with the result that the escaping the perforate pipe b'encounter the water spray and are cooled and reduced in volume While the water is mgiporated or converted into vapor. This vapor miin'gles With the exhaust gases and expands with such gases in the chamber a, this expansion further reducing the temperature and pressure. Such Water as is not ei-'ap n'atcd in the chamber a passes to the bottom of the chamber and is conducted thence by an outlet pipe Theexhaust gases and vapor of the water pass into the will therefore appear that by means of my hence caused to contractor reduced in volnine. Simultaneously water vapor is formed which mixes with the exhaust and the who lo mixture is allowed to expand in the chamber 0-. By these combined operations the eirhaust gases are brought practically to atmospheric pressure so that they may pass from the muffler with little noise. At the same time, and of equalimportance,-a clear passage is provided to the atmosphere and back pressure in the engine is avoided. Incidentally the Water cools the walls of the ehamheri a and obviates the common disadvantage of an extremely hot muiller I Having thus described my invention, What '1 claim as new and desire to secure by Letters Patent of the United- States, is: l. A muffler having an expansion chamher, a perforated inlet pipe for the exhaust grams, having a, perforate Wall at its inner end such. pipe projecting centrally into the expansion chamber anddimharging therein the firoducts of combustion ltl'lI'OUflll the pertorationa, a Water supply pipe discharging into the upper part of the chamber directly atmosphere through a pipe f, which is fas-- toned in the hoased outlet opening 0?. It

invention the exhaust gases are cooled andsure and temperature through the pipe 0 over the perforated pipe, said chamber having an outlet for the vapor and gases at the end opposite the supply'pipe and an outlet at the bottom for drawing ofi the surplus Water.

2: A niuffler having an expansion cham her, a perforated inlet pipe for the exhaust gases, having a Wall at its inner end, such pipe projecting into the expansion chamber and discharging therein the products of combustion through the perforations, a water supply pipe discl'larging into the upper two subscribing witnesses.

GEORGE GRAYJ Witnesses: v

LEROY EDDY, A. F. Soo'rri 

